1 /* $OpenBSD: ssl_lib.c,v 1.185 2018/04/25 07:10:39 tb Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #include <stdio.h> 144 145 #include "ssl_locl.h" 146 147 #include <openssl/bn.h> 148 #include <openssl/dh.h> 149 #include <openssl/lhash.h> 150 #include <openssl/objects.h> 151 #include <openssl/ocsp.h> 152 #include <openssl/x509v3.h> 153 154 #ifndef OPENSSL_NO_ENGINE 155 #include <openssl/engine.h> 156 #endif 157 158 #include "bytestring.h" 159 160 const char *SSL_version_str = OPENSSL_VERSION_TEXT; 161 162 int 163 SSL_clear(SSL *s) 164 { 165 if (s->method == NULL) { 166 SSLerror(s, SSL_R_NO_METHOD_SPECIFIED); 167 return (0); 168 } 169 170 if (ssl_clear_bad_session(s)) { 171 SSL_SESSION_free(s->session); 172 s->session = NULL; 173 } 174 175 s->error = 0; 176 s->internal->hit = 0; 177 s->internal->shutdown = 0; 178 179 if (s->internal->renegotiate) { 180 SSLerror(s, ERR_R_INTERNAL_ERROR); 181 return (0); 182 } 183 184 s->internal->type = 0; 185 186 s->version = s->method->internal->version; 187 s->client_version = s->version; 188 s->internal->rwstate = SSL_NOTHING; 189 s->internal->rstate = SSL_ST_READ_HEADER; 190 191 BUF_MEM_free(s->internal->init_buf); 192 s->internal->init_buf = NULL; 193 194 ssl_clear_cipher_ctx(s); 195 ssl_clear_hash_ctx(&s->read_hash); 196 ssl_clear_hash_ctx(&s->internal->write_hash); 197 198 s->internal->first_packet = 0; 199 200 /* 201 * Check to see if we were changed into a different method, if 202 * so, revert back if we are not doing session-id reuse. 203 */ 204 if (!s->internal->in_handshake && (s->session == NULL) && 205 (s->method != s->ctx->method)) { 206 s->method->internal->ssl_free(s); 207 s->method = s->ctx->method; 208 if (!s->method->internal->ssl_new(s)) 209 return (0); 210 } else 211 s->method->internal->ssl_clear(s); 212 213 S3I(s)->hs.state = SSL_ST_BEFORE|((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT); 214 215 return (1); 216 } 217 218 /* Used to change an SSL_CTXs default SSL method type */ 219 int 220 SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth) 221 { 222 STACK_OF(SSL_CIPHER) *sk; 223 224 ctx->method = meth; 225 226 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list), 227 &(ctx->internal->cipher_list_by_id), SSL_DEFAULT_CIPHER_LIST); 228 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) { 229 SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS); 230 return (0); 231 } 232 return (1); 233 } 234 235 SSL * 236 SSL_new(SSL_CTX *ctx) 237 { 238 SSL *s; 239 240 if (ctx == NULL) { 241 SSLerrorx(SSL_R_NULL_SSL_CTX); 242 return (NULL); 243 } 244 if (ctx->method == NULL) { 245 SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION); 246 return (NULL); 247 } 248 249 if ((s = calloc(1, sizeof(*s))) == NULL) { 250 SSLerrorx(ERR_R_MALLOC_FAILURE); 251 return (NULL); 252 } 253 if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL) { 254 free(s); 255 SSLerrorx(ERR_R_MALLOC_FAILURE); 256 return (NULL); 257 } 258 259 s->internal->min_version = ctx->internal->min_version; 260 s->internal->max_version = ctx->internal->max_version; 261 262 s->internal->options = ctx->internal->options; 263 s->internal->mode = ctx->internal->mode; 264 s->internal->max_cert_list = ctx->internal->max_cert_list; 265 266 if (ctx->internal->cert != NULL) { 267 /* 268 * Earlier library versions used to copy the pointer to 269 * the CERT, not its contents; only when setting new 270 * parameters for the per-SSL copy, ssl_cert_new would be 271 * called (and the direct reference to the per-SSL_CTX 272 * settings would be lost, but those still were indirectly 273 * accessed for various purposes, and for that reason they 274 * used to be known as s->ctx->default_cert). 275 * Now we don't look at the SSL_CTX's CERT after having 276 * duplicated it once. 277 */ 278 s->cert = ssl_cert_dup(ctx->internal->cert); 279 if (s->cert == NULL) 280 goto err; 281 } else 282 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */ 283 284 s->internal->read_ahead = ctx->internal->read_ahead; 285 s->internal->msg_callback = ctx->internal->msg_callback; 286 s->internal->msg_callback_arg = ctx->internal->msg_callback_arg; 287 s->verify_mode = ctx->verify_mode; 288 s->sid_ctx_length = ctx->sid_ctx_length; 289 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx); 290 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx)); 291 s->internal->verify_callback = ctx->internal->default_verify_callback; 292 s->internal->generate_session_id = ctx->internal->generate_session_id; 293 294 s->param = X509_VERIFY_PARAM_new(); 295 if (!s->param) 296 goto err; 297 X509_VERIFY_PARAM_inherit(s->param, ctx->param); 298 s->internal->quiet_shutdown = ctx->internal->quiet_shutdown; 299 s->max_send_fragment = ctx->internal->max_send_fragment; 300 301 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 302 s->ctx = ctx; 303 s->internal->tlsext_debug_cb = 0; 304 s->internal->tlsext_debug_arg = NULL; 305 s->internal->tlsext_ticket_expected = 0; 306 s->tlsext_status_type = -1; 307 s->internal->tlsext_status_expected = 0; 308 s->internal->tlsext_ocsp_ids = NULL; 309 s->internal->tlsext_ocsp_exts = NULL; 310 s->internal->tlsext_ocsp_resp = NULL; 311 s->internal->tlsext_ocsp_resplen = -1; 312 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 313 s->initial_ctx = ctx; 314 315 if (ctx->internal->tlsext_ecpointformatlist != NULL) { 316 s->internal->tlsext_ecpointformatlist = 317 calloc(ctx->internal->tlsext_ecpointformatlist_length, 318 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 319 if (s->internal->tlsext_ecpointformatlist == NULL) 320 goto err; 321 memcpy(s->internal->tlsext_ecpointformatlist, 322 ctx->internal->tlsext_ecpointformatlist, 323 ctx->internal->tlsext_ecpointformatlist_length * 324 sizeof(ctx->internal->tlsext_ecpointformatlist[0])); 325 s->internal->tlsext_ecpointformatlist_length = 326 ctx->internal->tlsext_ecpointformatlist_length; 327 } 328 if (ctx->internal->tlsext_supportedgroups != NULL) { 329 s->internal->tlsext_supportedgroups = 330 calloc(ctx->internal->tlsext_supportedgroups_length, 331 sizeof(ctx->internal->tlsext_supportedgroups)); 332 if (s->internal->tlsext_supportedgroups == NULL) 333 goto err; 334 memcpy(s->internal->tlsext_supportedgroups, 335 ctx->internal->tlsext_supportedgroups, 336 ctx->internal->tlsext_supportedgroups_length * 337 sizeof(ctx->internal->tlsext_supportedgroups[0])); 338 s->internal->tlsext_supportedgroups_length = 339 ctx->internal->tlsext_supportedgroups_length; 340 } 341 342 if (s->ctx->internal->alpn_client_proto_list != NULL) { 343 s->internal->alpn_client_proto_list = 344 malloc(s->ctx->internal->alpn_client_proto_list_len); 345 if (s->internal->alpn_client_proto_list == NULL) 346 goto err; 347 memcpy(s->internal->alpn_client_proto_list, 348 s->ctx->internal->alpn_client_proto_list, 349 s->ctx->internal->alpn_client_proto_list_len); 350 s->internal->alpn_client_proto_list_len = 351 s->ctx->internal->alpn_client_proto_list_len; 352 } 353 354 s->verify_result = X509_V_OK; 355 356 s->method = ctx->method; 357 358 if (!s->method->internal->ssl_new(s)) 359 goto err; 360 361 s->references = 1; 362 s->server = (ctx->method->internal->ssl_accept == ssl_undefined_function) ? 0 : 1; 363 364 SSL_clear(s); 365 366 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 367 368 return (s); 369 370 err: 371 SSL_free(s); 372 SSLerrorx(ERR_R_MALLOC_FAILURE); 373 return (NULL); 374 } 375 376 int 377 SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, 378 unsigned int sid_ctx_len) 379 { 380 if (sid_ctx_len > sizeof ctx->sid_ctx) { 381 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 382 return (0); 383 } 384 ctx->sid_ctx_length = sid_ctx_len; 385 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len); 386 387 return (1); 388 } 389 390 int 391 SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx, 392 unsigned int sid_ctx_len) 393 { 394 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { 395 SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 396 return (0); 397 } 398 ssl->sid_ctx_length = sid_ctx_len; 399 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len); 400 401 return (1); 402 } 403 404 int 405 SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb) 406 { 407 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 408 ctx->internal->generate_session_id = cb; 409 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 410 return (1); 411 } 412 413 int 414 SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb) 415 { 416 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 417 ssl->internal->generate_session_id = cb; 418 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 419 return (1); 420 } 421 422 int 423 SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id, 424 unsigned int id_len) 425 { 426 /* 427 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp 428 * shows how we can "construct" a session to give us the desired 429 * check - ie. to find if there's a session in the hash table 430 * that would conflict with any new session built out of this 431 * id/id_len and the ssl_version in use by this SSL. 432 */ 433 SSL_SESSION r, *p; 434 435 if (id_len > sizeof r.session_id) 436 return (0); 437 438 r.ssl_version = ssl->version; 439 r.session_id_length = id_len; 440 memcpy(r.session_id, id, id_len); 441 442 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 443 p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r); 444 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 445 return (p != NULL); 446 } 447 448 int 449 SSL_CTX_set_purpose(SSL_CTX *s, int purpose) 450 { 451 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 452 } 453 454 int 455 SSL_set_purpose(SSL *s, int purpose) 456 { 457 return (X509_VERIFY_PARAM_set_purpose(s->param, purpose)); 458 } 459 460 int 461 SSL_CTX_set_trust(SSL_CTX *s, int trust) 462 { 463 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 464 } 465 466 int 467 SSL_set_trust(SSL *s, int trust) 468 { 469 return (X509_VERIFY_PARAM_set_trust(s->param, trust)); 470 } 471 472 X509_VERIFY_PARAM * 473 SSL_CTX_get0_param(SSL_CTX *ctx) 474 { 475 return (ctx->param); 476 } 477 478 int 479 SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 480 { 481 return (X509_VERIFY_PARAM_set1(ctx->param, vpm)); 482 } 483 484 X509_VERIFY_PARAM * 485 SSL_get0_param(SSL *ssl) 486 { 487 return (ssl->param); 488 } 489 490 int 491 SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 492 { 493 return (X509_VERIFY_PARAM_set1(ssl->param, vpm)); 494 } 495 496 void 497 SSL_free(SSL *s) 498 { 499 int i; 500 501 if (s == NULL) 502 return; 503 504 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL); 505 if (i > 0) 506 return; 507 508 X509_VERIFY_PARAM_free(s->param); 509 510 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data); 511 512 if (s->bbio != NULL) { 513 /* If the buffering BIO is in place, pop it off */ 514 if (s->bbio == s->wbio) { 515 s->wbio = BIO_pop(s->wbio); 516 } 517 BIO_free(s->bbio); 518 s->bbio = NULL; 519 } 520 521 if (s->rbio != s->wbio) 522 BIO_free_all(s->rbio); 523 BIO_free_all(s->wbio); 524 525 BUF_MEM_free(s->internal->init_buf); 526 527 /* add extra stuff */ 528 sk_SSL_CIPHER_free(s->cipher_list); 529 sk_SSL_CIPHER_free(s->internal->cipher_list_by_id); 530 531 /* Make the next call work :-) */ 532 if (s->session != NULL) { 533 ssl_clear_bad_session(s); 534 SSL_SESSION_free(s->session); 535 } 536 537 ssl_clear_cipher_ctx(s); 538 ssl_clear_hash_ctx(&s->read_hash); 539 ssl_clear_hash_ctx(&s->internal->write_hash); 540 541 ssl_cert_free(s->cert); 542 543 free(s->tlsext_hostname); 544 SSL_CTX_free(s->initial_ctx); 545 546 free(s->internal->tlsext_ecpointformatlist); 547 free(s->internal->tlsext_supportedgroups); 548 549 sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts, 550 X509_EXTENSION_free); 551 sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free); 552 free(s->internal->tlsext_ocsp_resp); 553 554 sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free); 555 556 if (s->method != NULL) 557 s->method->internal->ssl_free(s); 558 559 SSL_CTX_free(s->ctx); 560 561 free(s->internal->alpn_client_proto_list); 562 563 #ifndef OPENSSL_NO_SRTP 564 sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles); 565 #endif 566 567 free(s->internal); 568 free(s); 569 } 570 571 int 572 SSL_up_ref(SSL *s) 573 { 574 int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL); 575 return (refs > 1) ? 1 : 0; 576 } 577 578 void 579 SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio) 580 { 581 /* If the output buffering BIO is still in place, remove it */ 582 if (s->bbio != NULL) { 583 if (s->wbio == s->bbio) { 584 s->wbio = s->wbio->next_bio; 585 s->bbio->next_bio = NULL; 586 } 587 } 588 589 if (s->rbio != rbio && s->rbio != s->wbio) 590 BIO_free_all(s->rbio); 591 if (s->wbio != wbio) 592 BIO_free_all(s->wbio); 593 s->rbio = rbio; 594 s->wbio = wbio; 595 } 596 597 BIO * 598 SSL_get_rbio(const SSL *s) 599 { 600 return (s->rbio); 601 } 602 603 BIO * 604 SSL_get_wbio(const SSL *s) 605 { 606 return (s->wbio); 607 } 608 609 int 610 SSL_get_fd(const SSL *s) 611 { 612 return (SSL_get_rfd(s)); 613 } 614 615 int 616 SSL_get_rfd(const SSL *s) 617 { 618 int ret = -1; 619 BIO *b, *r; 620 621 b = SSL_get_rbio(s); 622 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 623 if (r != NULL) 624 BIO_get_fd(r, &ret); 625 return (ret); 626 } 627 628 int 629 SSL_get_wfd(const SSL *s) 630 { 631 int ret = -1; 632 BIO *b, *r; 633 634 b = SSL_get_wbio(s); 635 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR); 636 if (r != NULL) 637 BIO_get_fd(r, &ret); 638 return (ret); 639 } 640 641 int 642 SSL_set_fd(SSL *s, int fd) 643 { 644 int ret = 0; 645 BIO *bio = NULL; 646 647 bio = BIO_new(BIO_s_socket()); 648 649 if (bio == NULL) { 650 SSLerror(s, ERR_R_BUF_LIB); 651 goto err; 652 } 653 BIO_set_fd(bio, fd, BIO_NOCLOSE); 654 SSL_set_bio(s, bio, bio); 655 ret = 1; 656 err: 657 return (ret); 658 } 659 660 int 661 SSL_set_wfd(SSL *s, int fd) 662 { 663 int ret = 0; 664 BIO *bio = NULL; 665 666 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET) 667 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) { 668 bio = BIO_new(BIO_s_socket()); 669 670 if (bio == NULL) { 671 SSLerror(s, ERR_R_BUF_LIB); 672 goto err; 673 } 674 BIO_set_fd(bio, fd, BIO_NOCLOSE); 675 SSL_set_bio(s, SSL_get_rbio(s), bio); 676 } else 677 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s)); 678 ret = 1; 679 err: 680 return (ret); 681 } 682 683 int 684 SSL_set_rfd(SSL *s, int fd) 685 { 686 int ret = 0; 687 BIO *bio = NULL; 688 689 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET) 690 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) { 691 bio = BIO_new(BIO_s_socket()); 692 693 if (bio == NULL) { 694 SSLerror(s, ERR_R_BUF_LIB); 695 goto err; 696 } 697 BIO_set_fd(bio, fd, BIO_NOCLOSE); 698 SSL_set_bio(s, bio, SSL_get_wbio(s)); 699 } else 700 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s)); 701 ret = 1; 702 err: 703 return (ret); 704 } 705 706 707 /* return length of latest Finished message we sent, copy to 'buf' */ 708 size_t 709 SSL_get_finished(const SSL *s, void *buf, size_t count) 710 { 711 size_t ret = 0; 712 713 if (s->s3 != NULL) { 714 ret = S3I(s)->tmp.finish_md_len; 715 if (count > ret) 716 count = ret; 717 memcpy(buf, S3I(s)->tmp.finish_md, count); 718 } 719 return (ret); 720 } 721 722 /* return length of latest Finished message we expected, copy to 'buf' */ 723 size_t 724 SSL_get_peer_finished(const SSL *s, void *buf, size_t count) 725 { 726 size_t ret = 0; 727 728 if (s->s3 != NULL) { 729 ret = S3I(s)->tmp.peer_finish_md_len; 730 if (count > ret) 731 count = ret; 732 memcpy(buf, S3I(s)->tmp.peer_finish_md, count); 733 } 734 return (ret); 735 } 736 737 738 int 739 SSL_get_verify_mode(const SSL *s) 740 { 741 return (s->verify_mode); 742 } 743 744 int 745 SSL_get_verify_depth(const SSL *s) 746 { 747 return (X509_VERIFY_PARAM_get_depth(s->param)); 748 } 749 750 int 751 (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) 752 { 753 return (s->internal->verify_callback); 754 } 755 756 int 757 SSL_CTX_get_verify_mode(const SSL_CTX *ctx) 758 { 759 return (ctx->verify_mode); 760 } 761 762 int 763 SSL_CTX_get_verify_depth(const SSL_CTX *ctx) 764 { 765 return (X509_VERIFY_PARAM_get_depth(ctx->param)); 766 } 767 768 int 769 (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *) 770 { 771 return (ctx->internal->default_verify_callback); 772 } 773 774 void 775 SSL_set_verify(SSL *s, int mode, 776 int (*callback)(int ok, X509_STORE_CTX *ctx)) 777 { 778 s->verify_mode = mode; 779 if (callback != NULL) 780 s->internal->verify_callback = callback; 781 } 782 783 void 784 SSL_set_verify_depth(SSL *s, int depth) 785 { 786 X509_VERIFY_PARAM_set_depth(s->param, depth); 787 } 788 789 void 790 SSL_set_read_ahead(SSL *s, int yes) 791 { 792 s->internal->read_ahead = yes; 793 } 794 795 int 796 SSL_get_read_ahead(const SSL *s) 797 { 798 return (s->internal->read_ahead); 799 } 800 801 int 802 SSL_pending(const SSL *s) 803 { 804 /* 805 * SSL_pending cannot work properly if read-ahead is enabled 806 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), 807 * and it is impossible to fix since SSL_pending cannot report 808 * errors that may be observed while scanning the new data. 809 * (Note that SSL_pending() is often used as a boolean value, 810 * so we'd better not return -1.) 811 */ 812 return (s->method->internal->ssl_pending(s)); 813 } 814 815 X509 * 816 SSL_get_peer_certificate(const SSL *s) 817 { 818 X509 *r; 819 820 if ((s == NULL) || (s->session == NULL)) 821 r = NULL; 822 else 823 r = s->session->peer; 824 825 if (r == NULL) 826 return (r); 827 828 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509); 829 830 return (r); 831 } 832 833 STACK_OF(X509) * 834 SSL_get_peer_cert_chain(const SSL *s) 835 { 836 STACK_OF(X509) *r; 837 838 if ((s == NULL) || (s->session == NULL) || 839 (SSI(s)->sess_cert == NULL)) 840 r = NULL; 841 else 842 r = SSI(s)->sess_cert->cert_chain; 843 844 /* 845 * If we are a client, cert_chain includes the peer's own 846 * certificate; 847 * if we are a server, it does not. 848 */ 849 return (r); 850 } 851 852 /* 853 * Now in theory, since the calling process own 't' it should be safe to 854 * modify. We need to be able to read f without being hassled 855 */ 856 void 857 SSL_copy_session_id(SSL *t, const SSL *f) 858 { 859 CERT *tmp; 860 861 /* Do we need to to SSL locking? */ 862 SSL_set_session(t, SSL_get_session(f)); 863 864 /* 865 * What if we are setup as SSLv2 but want to talk SSLv3 or 866 * vice-versa. 867 */ 868 if (t->method != f->method) { 869 t->method->internal->ssl_free(t); /* cleanup current */ 870 t->method = f->method; /* change method */ 871 t->method->internal->ssl_new(t); /* setup new */ 872 } 873 874 tmp = t->cert; 875 if (f->cert != NULL) { 876 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 877 t->cert = f->cert; 878 } else 879 t->cert = NULL; 880 ssl_cert_free(tmp); 881 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length); 882 } 883 884 /* Fix this so it checks all the valid key/cert options */ 885 int 886 SSL_CTX_check_private_key(const SSL_CTX *ctx) 887 { 888 if ((ctx == NULL) || (ctx->internal->cert == NULL) || 889 (ctx->internal->cert->key->x509 == NULL)) { 890 SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED); 891 return (0); 892 } 893 if (ctx->internal->cert->key->privatekey == NULL) { 894 SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED); 895 return (0); 896 } 897 return (X509_check_private_key(ctx->internal->cert->key->x509, 898 ctx->internal->cert->key->privatekey)); 899 } 900 901 /* Fix this function so that it takes an optional type parameter */ 902 int 903 SSL_check_private_key(const SSL *ssl) 904 { 905 if (ssl == NULL) { 906 SSLerrorx(ERR_R_PASSED_NULL_PARAMETER); 907 return (0); 908 } 909 if (ssl->cert == NULL) { 910 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 911 return (0); 912 } 913 if (ssl->cert->key->x509 == NULL) { 914 SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED); 915 return (0); 916 } 917 if (ssl->cert->key->privatekey == NULL) { 918 SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED); 919 return (0); 920 } 921 return (X509_check_private_key(ssl->cert->key->x509, 922 ssl->cert->key->privatekey)); 923 } 924 925 int 926 SSL_accept(SSL *s) 927 { 928 if (s->internal->handshake_func == NULL) 929 SSL_set_accept_state(s); /* Not properly initialized yet */ 930 931 return (s->method->internal->ssl_accept(s)); 932 } 933 934 int 935 SSL_connect(SSL *s) 936 { 937 if (s->internal->handshake_func == NULL) 938 SSL_set_connect_state(s); /* Not properly initialized yet */ 939 940 return (s->method->internal->ssl_connect(s)); 941 } 942 943 int 944 SSL_is_server(const SSL *s) 945 { 946 return s->server; 947 } 948 949 long 950 SSL_get_default_timeout(const SSL *s) 951 { 952 return (s->method->internal->get_timeout()); 953 } 954 955 int 956 SSL_read(SSL *s, void *buf, int num) 957 { 958 if (s->internal->handshake_func == NULL) { 959 SSLerror(s, SSL_R_UNINITIALIZED); 960 return (-1); 961 } 962 963 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 964 s->internal->rwstate = SSL_NOTHING; 965 return (0); 966 } 967 return ssl3_read(s, buf, num); 968 } 969 970 int 971 SSL_peek(SSL *s, void *buf, int num) 972 { 973 if (s->internal->handshake_func == NULL) { 974 SSLerror(s, SSL_R_UNINITIALIZED); 975 return (-1); 976 } 977 978 if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) { 979 return (0); 980 } 981 return ssl3_peek(s, buf, num); 982 } 983 984 int 985 SSL_write(SSL *s, const void *buf, int num) 986 { 987 if (s->internal->handshake_func == NULL) { 988 SSLerror(s, SSL_R_UNINITIALIZED); 989 return (-1); 990 } 991 992 if (s->internal->shutdown & SSL_SENT_SHUTDOWN) { 993 s->internal->rwstate = SSL_NOTHING; 994 SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN); 995 return (-1); 996 } 997 return ssl3_write(s, buf, num); 998 } 999 1000 int 1001 SSL_shutdown(SSL *s) 1002 { 1003 /* 1004 * Note that this function behaves differently from what one might 1005 * expect. Return values are 0 for no success (yet), 1006 * 1 for success; but calling it once is usually not enough, 1007 * even if blocking I/O is used (see ssl3_shutdown). 1008 */ 1009 1010 if (s->internal->handshake_func == NULL) { 1011 SSLerror(s, SSL_R_UNINITIALIZED); 1012 return (-1); 1013 } 1014 1015 if ((s != NULL) && !SSL_in_init(s)) 1016 return (s->method->internal->ssl_shutdown(s)); 1017 else 1018 return (1); 1019 } 1020 1021 int 1022 SSL_renegotiate(SSL *s) 1023 { 1024 if (s->internal->renegotiate == 0) 1025 s->internal->renegotiate = 1; 1026 1027 s->internal->new_session = 1; 1028 1029 return (s->method->internal->ssl_renegotiate(s)); 1030 } 1031 1032 int 1033 SSL_renegotiate_abbreviated(SSL *s) 1034 { 1035 if (s->internal->renegotiate == 0) 1036 s->internal->renegotiate = 1; 1037 1038 s->internal->new_session = 0; 1039 1040 return (s->method->internal->ssl_renegotiate(s)); 1041 } 1042 1043 int 1044 SSL_renegotiate_pending(SSL *s) 1045 { 1046 /* 1047 * Becomes true when negotiation is requested; 1048 * false again once a handshake has finished. 1049 */ 1050 return (s->internal->renegotiate != 0); 1051 } 1052 1053 long 1054 SSL_ctrl(SSL *s, int cmd, long larg, void *parg) 1055 { 1056 long l; 1057 1058 switch (cmd) { 1059 case SSL_CTRL_GET_READ_AHEAD: 1060 return (s->internal->read_ahead); 1061 case SSL_CTRL_SET_READ_AHEAD: 1062 l = s->internal->read_ahead; 1063 s->internal->read_ahead = larg; 1064 return (l); 1065 1066 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1067 s->internal->msg_callback_arg = parg; 1068 return (1); 1069 1070 case SSL_CTRL_OPTIONS: 1071 return (s->internal->options|=larg); 1072 case SSL_CTRL_CLEAR_OPTIONS: 1073 return (s->internal->options&=~larg); 1074 case SSL_CTRL_MODE: 1075 return (s->internal->mode|=larg); 1076 case SSL_CTRL_CLEAR_MODE: 1077 return (s->internal->mode &=~larg); 1078 case SSL_CTRL_GET_MAX_CERT_LIST: 1079 return (s->internal->max_cert_list); 1080 case SSL_CTRL_SET_MAX_CERT_LIST: 1081 l = s->internal->max_cert_list; 1082 s->internal->max_cert_list = larg; 1083 return (l); 1084 case SSL_CTRL_SET_MTU: 1085 #ifndef OPENSSL_NO_DTLS1 1086 if (larg < (long)dtls1_min_mtu()) 1087 return (0); 1088 #endif 1089 if (SSL_IS_DTLS(s)) { 1090 D1I(s)->mtu = larg; 1091 return (larg); 1092 } 1093 return (0); 1094 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1095 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1096 return (0); 1097 s->max_send_fragment = larg; 1098 return (1); 1099 case SSL_CTRL_GET_RI_SUPPORT: 1100 if (s->s3) 1101 return (S3I(s)->send_connection_binding); 1102 else return (0); 1103 default: 1104 if (SSL_IS_DTLS(s)) 1105 return dtls1_ctrl(s, cmd, larg, parg); 1106 return ssl3_ctrl(s, cmd, larg, parg); 1107 } 1108 } 1109 1110 long 1111 SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void)) 1112 { 1113 switch (cmd) { 1114 case SSL_CTRL_SET_MSG_CALLBACK: 1115 s->internal->msg_callback = (void (*)(int write_p, int version, 1116 int content_type, const void *buf, size_t len, 1117 SSL *ssl, void *arg))(fp); 1118 return (1); 1119 1120 default: 1121 return (ssl3_callback_ctrl(s, cmd, fp)); 1122 } 1123 } 1124 1125 struct lhash_st_SSL_SESSION * 1126 SSL_CTX_sessions(SSL_CTX *ctx) 1127 { 1128 return (ctx->internal->sessions); 1129 } 1130 1131 long 1132 SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) 1133 { 1134 long l; 1135 1136 switch (cmd) { 1137 case SSL_CTRL_GET_READ_AHEAD: 1138 return (ctx->internal->read_ahead); 1139 case SSL_CTRL_SET_READ_AHEAD: 1140 l = ctx->internal->read_ahead; 1141 ctx->internal->read_ahead = larg; 1142 return (l); 1143 1144 case SSL_CTRL_SET_MSG_CALLBACK_ARG: 1145 ctx->internal->msg_callback_arg = parg; 1146 return (1); 1147 1148 case SSL_CTRL_GET_MAX_CERT_LIST: 1149 return (ctx->internal->max_cert_list); 1150 case SSL_CTRL_SET_MAX_CERT_LIST: 1151 l = ctx->internal->max_cert_list; 1152 ctx->internal->max_cert_list = larg; 1153 return (l); 1154 1155 case SSL_CTRL_SET_SESS_CACHE_SIZE: 1156 l = ctx->internal->session_cache_size; 1157 ctx->internal->session_cache_size = larg; 1158 return (l); 1159 case SSL_CTRL_GET_SESS_CACHE_SIZE: 1160 return (ctx->internal->session_cache_size); 1161 case SSL_CTRL_SET_SESS_CACHE_MODE: 1162 l = ctx->internal->session_cache_mode; 1163 ctx->internal->session_cache_mode = larg; 1164 return (l); 1165 case SSL_CTRL_GET_SESS_CACHE_MODE: 1166 return (ctx->internal->session_cache_mode); 1167 1168 case SSL_CTRL_SESS_NUMBER: 1169 return (lh_SSL_SESSION_num_items(ctx->internal->sessions)); 1170 case SSL_CTRL_SESS_CONNECT: 1171 return (ctx->internal->stats.sess_connect); 1172 case SSL_CTRL_SESS_CONNECT_GOOD: 1173 return (ctx->internal->stats.sess_connect_good); 1174 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE: 1175 return (ctx->internal->stats.sess_connect_renegotiate); 1176 case SSL_CTRL_SESS_ACCEPT: 1177 return (ctx->internal->stats.sess_accept); 1178 case SSL_CTRL_SESS_ACCEPT_GOOD: 1179 return (ctx->internal->stats.sess_accept_good); 1180 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE: 1181 return (ctx->internal->stats.sess_accept_renegotiate); 1182 case SSL_CTRL_SESS_HIT: 1183 return (ctx->internal->stats.sess_hit); 1184 case SSL_CTRL_SESS_CB_HIT: 1185 return (ctx->internal->stats.sess_cb_hit); 1186 case SSL_CTRL_SESS_MISSES: 1187 return (ctx->internal->stats.sess_miss); 1188 case SSL_CTRL_SESS_TIMEOUTS: 1189 return (ctx->internal->stats.sess_timeout); 1190 case SSL_CTRL_SESS_CACHE_FULL: 1191 return (ctx->internal->stats.sess_cache_full); 1192 case SSL_CTRL_OPTIONS: 1193 return (ctx->internal->options|=larg); 1194 case SSL_CTRL_CLEAR_OPTIONS: 1195 return (ctx->internal->options&=~larg); 1196 case SSL_CTRL_MODE: 1197 return (ctx->internal->mode|=larg); 1198 case SSL_CTRL_CLEAR_MODE: 1199 return (ctx->internal->mode&=~larg); 1200 case SSL_CTRL_SET_MAX_SEND_FRAGMENT: 1201 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH) 1202 return (0); 1203 ctx->internal->max_send_fragment = larg; 1204 return (1); 1205 default: 1206 return (ssl3_ctx_ctrl(ctx, cmd, larg, parg)); 1207 } 1208 } 1209 1210 long 1211 SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void)) 1212 { 1213 switch (cmd) { 1214 case SSL_CTRL_SET_MSG_CALLBACK: 1215 ctx->internal->msg_callback = (void (*)(int write_p, int version, 1216 int content_type, const void *buf, size_t len, SSL *ssl, 1217 void *arg))(fp); 1218 return (1); 1219 1220 default: 1221 return (ssl3_ctx_callback_ctrl(ctx, cmd, fp)); 1222 } 1223 } 1224 1225 int 1226 ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b) 1227 { 1228 long l; 1229 1230 l = a->id - b->id; 1231 if (l == 0L) 1232 return (0); 1233 else 1234 return ((l > 0) ? 1:-1); 1235 } 1236 1237 int 1238 ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 1239 const SSL_CIPHER * const *bp) 1240 { 1241 long l; 1242 1243 l = (*ap)->id - (*bp)->id; 1244 if (l == 0L) 1245 return (0); 1246 else 1247 return ((l > 0) ? 1:-1); 1248 } 1249 1250 /* 1251 * Return a STACK of the ciphers available for the SSL and in order of 1252 * preference. 1253 */ 1254 STACK_OF(SSL_CIPHER) * 1255 SSL_get_ciphers(const SSL *s) 1256 { 1257 if (s != NULL) { 1258 if (s->cipher_list != NULL) { 1259 return (s->cipher_list); 1260 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) { 1261 return (s->ctx->cipher_list); 1262 } 1263 } 1264 return (NULL); 1265 } 1266 1267 /* 1268 * Return a STACK of the ciphers available for the SSL and in order of 1269 * algorithm id. 1270 */ 1271 STACK_OF(SSL_CIPHER) * 1272 ssl_get_ciphers_by_id(SSL *s) 1273 { 1274 if (s != NULL) { 1275 if (s->internal->cipher_list_by_id != NULL) { 1276 return (s->internal->cipher_list_by_id); 1277 } else if ((s->ctx != NULL) && 1278 (s->ctx->internal->cipher_list_by_id != NULL)) { 1279 return (s->ctx->internal->cipher_list_by_id); 1280 } 1281 } 1282 return (NULL); 1283 } 1284 1285 /* See if we have any ECC cipher suites. */ 1286 int 1287 ssl_has_ecc_ciphers(SSL *s) 1288 { 1289 STACK_OF(SSL_CIPHER) *ciphers; 1290 unsigned long alg_k, alg_a; 1291 SSL_CIPHER *cipher; 1292 int i; 1293 1294 if (s->version == DTLS1_VERSION) 1295 return 0; 1296 if ((ciphers = SSL_get_ciphers(s)) == NULL) 1297 return 0; 1298 1299 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1300 cipher = sk_SSL_CIPHER_value(ciphers, i); 1301 1302 alg_k = cipher->algorithm_mkey; 1303 alg_a = cipher->algorithm_auth; 1304 1305 if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)) 1306 return 1; 1307 } 1308 1309 return 0; 1310 } 1311 1312 /* The old interface to get the same thing as SSL_get_ciphers(). */ 1313 const char * 1314 SSL_get_cipher_list(const SSL *s, int n) 1315 { 1316 SSL_CIPHER *c; 1317 STACK_OF(SSL_CIPHER) *sk; 1318 1319 if (s == NULL) 1320 return (NULL); 1321 sk = SSL_get_ciphers(s); 1322 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n)) 1323 return (NULL); 1324 c = sk_SSL_CIPHER_value(sk, n); 1325 if (c == NULL) 1326 return (NULL); 1327 return (c->name); 1328 } 1329 1330 STACK_OF(SSL_CIPHER) * 1331 SSL_CTX_get_ciphers(const SSL_CTX *ctx) 1332 { 1333 return ctx->cipher_list; 1334 } 1335 1336 /* Specify the ciphers to be used by default by the SSL_CTX. */ 1337 int 1338 SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str) 1339 { 1340 STACK_OF(SSL_CIPHER) *sk; 1341 1342 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list, 1343 &ctx->internal->cipher_list_by_id, str); 1344 /* 1345 * ssl_create_cipher_list may return an empty stack if it 1346 * was unable to find a cipher matching the given rule string 1347 * (for example if the rule string specifies a cipher which 1348 * has been disabled). This is not an error as far as 1349 * ssl_create_cipher_list is concerned, and hence 1350 * ctx->cipher_list and ctx->internal->cipher_list_by_id has been 1351 * updated. 1352 */ 1353 if (sk == NULL) 1354 return (0); 1355 else if (sk_SSL_CIPHER_num(sk) == 0) { 1356 SSLerrorx(SSL_R_NO_CIPHER_MATCH); 1357 return (0); 1358 } 1359 return (1); 1360 } 1361 1362 /* Specify the ciphers to be used by the SSL. */ 1363 int 1364 SSL_set_cipher_list(SSL *s, const char *str) 1365 { 1366 STACK_OF(SSL_CIPHER) *sk; 1367 1368 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list, 1369 &s->internal->cipher_list_by_id, str); 1370 /* see comment in SSL_CTX_set_cipher_list */ 1371 if (sk == NULL) 1372 return (0); 1373 else if (sk_SSL_CIPHER_num(sk) == 0) { 1374 SSLerror(s, SSL_R_NO_CIPHER_MATCH); 1375 return (0); 1376 } 1377 return (1); 1378 } 1379 1380 /* works well for SSLv2, not so good for SSLv3 */ 1381 char * 1382 SSL_get_shared_ciphers(const SSL *s, char *buf, int len) 1383 { 1384 char *end; 1385 STACK_OF(SSL_CIPHER) *sk; 1386 SSL_CIPHER *c; 1387 size_t curlen = 0; 1388 int i; 1389 1390 if (s->session == NULL || s->session->ciphers == NULL || len < 2) 1391 return (NULL); 1392 1393 sk = s->session->ciphers; 1394 if (sk_SSL_CIPHER_num(sk) == 0) 1395 return (NULL); 1396 1397 buf[0] = '\0'; 1398 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) { 1399 c = sk_SSL_CIPHER_value(sk, i); 1400 end = buf + curlen; 1401 if (strlcat(buf, c->name, len) >= len || 1402 (curlen = strlcat(buf, ":", len)) >= len) { 1403 /* remove truncated cipher from list */ 1404 *end = '\0'; 1405 break; 1406 } 1407 } 1408 /* remove trailing colon */ 1409 if ((end = strrchr(buf, ':')) != NULL) 1410 *end = '\0'; 1411 return (buf); 1412 } 1413 1414 int 1415 ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *ciphers, CBB *cbb) 1416 { 1417 SSL_CIPHER *cipher; 1418 int num_ciphers = 0; 1419 int i; 1420 1421 if (ciphers == NULL) 1422 return 0; 1423 1424 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) { 1425 if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL) 1426 return 0; 1427 1428 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */ 1429 if ((cipher->algorithm_ssl & SSL_TLSV1_2) && 1430 (TLS1_get_client_version(s) < TLS1_2_VERSION)) 1431 continue; 1432 1433 if (!CBB_add_u16(cbb, ssl3_cipher_get_value(cipher))) 1434 return 0; 1435 1436 num_ciphers++; 1437 } 1438 1439 /* Add SCSV if there are other ciphers and we're not renegotiating. */ 1440 if (num_ciphers > 0 && !s->internal->renegotiate) { 1441 if (!CBB_add_u16(cbb, SSL3_CK_SCSV & SSL3_CK_VALUE_MASK)) 1442 return 0; 1443 } 1444 1445 if (!CBB_flush(cbb)) 1446 return 0; 1447 1448 return 1; 1449 } 1450 1451 STACK_OF(SSL_CIPHER) * 1452 ssl_bytes_to_cipher_list(SSL *s, CBS *cbs) 1453 { 1454 STACK_OF(SSL_CIPHER) *ciphers = NULL; 1455 const SSL_CIPHER *cipher; 1456 uint16_t cipher_value, max_version; 1457 unsigned long cipher_id; 1458 1459 if (s->s3 != NULL) 1460 S3I(s)->send_connection_binding = 0; 1461 1462 if ((ciphers = sk_SSL_CIPHER_new_null()) == NULL) { 1463 SSLerror(s, ERR_R_MALLOC_FAILURE); 1464 goto err; 1465 } 1466 1467 while (CBS_len(cbs) > 0) { 1468 if (!CBS_get_u16(cbs, &cipher_value)) { 1469 SSLerror(s, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST); 1470 goto err; 1471 } 1472 1473 cipher_id = SSL3_CK_ID | cipher_value; 1474 1475 if (s->s3 != NULL && cipher_id == SSL3_CK_SCSV) { 1476 /* 1477 * TLS_EMPTY_RENEGOTIATION_INFO_SCSV is fatal if 1478 * renegotiating. 1479 */ 1480 if (s->internal->renegotiate) { 1481 SSLerror(s, SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING); 1482 ssl3_send_alert(s, SSL3_AL_FATAL, 1483 SSL_AD_HANDSHAKE_FAILURE); 1484 1485 goto err; 1486 } 1487 S3I(s)->send_connection_binding = 1; 1488 continue; 1489 } 1490 1491 if (cipher_id == SSL3_CK_FALLBACK_SCSV) { 1492 /* 1493 * TLS_FALLBACK_SCSV indicates that the client 1494 * previously tried a higher protocol version. 1495 * Fail if the current version is an unexpected 1496 * downgrade. 1497 */ 1498 max_version = ssl_max_server_version(s); 1499 if (max_version == 0 || s->version < max_version) { 1500 SSLerror(s, SSL_R_INAPPROPRIATE_FALLBACK); 1501 if (s->s3 != NULL) 1502 ssl3_send_alert(s, SSL3_AL_FATAL, 1503 SSL_AD_INAPPROPRIATE_FALLBACK); 1504 goto err; 1505 } 1506 continue; 1507 } 1508 1509 if ((cipher = ssl3_get_cipher_by_value(cipher_value)) != NULL) { 1510 if (!sk_SSL_CIPHER_push(ciphers, cipher)) { 1511 SSLerror(s, ERR_R_MALLOC_FAILURE); 1512 goto err; 1513 } 1514 } 1515 } 1516 1517 return (ciphers); 1518 1519 err: 1520 sk_SSL_CIPHER_free(ciphers); 1521 1522 return (NULL); 1523 } 1524 1525 1526 /* 1527 * Return a servername extension value if provided in Client Hello, or NULL. 1528 * So far, only host_name types are defined (RFC 3546). 1529 */ 1530 const char * 1531 SSL_get_servername(const SSL *s, const int type) 1532 { 1533 if (type != TLSEXT_NAMETYPE_host_name) 1534 return (NULL); 1535 1536 return (s->session && !s->tlsext_hostname ? 1537 s->session->tlsext_hostname : 1538 s->tlsext_hostname); 1539 } 1540 1541 int 1542 SSL_get_servername_type(const SSL *s) 1543 { 1544 if (s->session && 1545 (!s->tlsext_hostname ? 1546 s->session->tlsext_hostname : s->tlsext_hostname)) 1547 return (TLSEXT_NAMETYPE_host_name); 1548 return (-1); 1549 } 1550 1551 /* 1552 * SSL_select_next_proto implements standard protocol selection. It is 1553 * expected that this function is called from the callback set by 1554 * SSL_CTX_set_alpn_select_cb. 1555 * 1556 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte 1557 * strings. The length byte itself is not included in the length. A byte 1558 * string of length 0 is invalid. No byte string may be truncated. 1559 * 1560 * It returns either: 1561 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or 1562 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached. 1563 */ 1564 int 1565 SSL_select_next_proto(unsigned char **out, unsigned char *outlen, 1566 const unsigned char *server, unsigned int server_len, 1567 const unsigned char *client, unsigned int client_len) 1568 { 1569 unsigned int i, j; 1570 const unsigned char *result; 1571 int status = OPENSSL_NPN_UNSUPPORTED; 1572 1573 /* 1574 * For each protocol in server preference order, 1575 * see if we support it. 1576 */ 1577 for (i = 0; i < server_len; ) { 1578 for (j = 0; j < client_len; ) { 1579 if (server[i] == client[j] && 1580 memcmp(&server[i + 1], 1581 &client[j + 1], server[i]) == 0) { 1582 /* We found a match */ 1583 result = &server[i]; 1584 status = OPENSSL_NPN_NEGOTIATED; 1585 goto found; 1586 } 1587 j += client[j]; 1588 j++; 1589 } 1590 i += server[i]; 1591 i++; 1592 } 1593 1594 /* There's no overlap between our protocols and the server's list. */ 1595 result = client; 1596 status = OPENSSL_NPN_NO_OVERLAP; 1597 1598 found: 1599 *out = (unsigned char *) result + 1; 1600 *outlen = result[0]; 1601 return (status); 1602 } 1603 1604 /* SSL_get0_next_proto_negotiated is deprecated. */ 1605 void 1606 SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, 1607 unsigned *len) 1608 { 1609 *data = NULL; 1610 *len = 0; 1611 } 1612 1613 /* SSL_CTX_set_next_protos_advertised_cb is deprecated. */ 1614 void 1615 SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, 1616 const unsigned char **out, unsigned int *outlen, void *arg), void *arg) 1617 { 1618 } 1619 1620 /* SSL_CTX_set_next_proto_select_cb is deprecated. */ 1621 void 1622 SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, 1623 unsigned char **out, unsigned char *outlen, const unsigned char *in, 1624 unsigned int inlen, void *arg), void *arg) 1625 { 1626 } 1627 1628 /* 1629 * SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified 1630 * protocols, which must be in wire-format (i.e. a series of non-empty, 1631 * 8-bit length-prefixed strings). Returns 0 on success. 1632 */ 1633 int 1634 SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos, 1635 unsigned int protos_len) 1636 { 1637 int failed = 1; 1638 1639 if (protos == NULL || protos_len == 0) 1640 goto err; 1641 1642 free(ctx->internal->alpn_client_proto_list); 1643 ctx->internal->alpn_client_proto_list = NULL; 1644 ctx->internal->alpn_client_proto_list_len = 0; 1645 1646 if ((ctx->internal->alpn_client_proto_list = malloc(protos_len)) 1647 == NULL) 1648 goto err; 1649 ctx->internal->alpn_client_proto_list_len = protos_len; 1650 1651 memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len); 1652 1653 failed = 0; 1654 1655 err: 1656 /* NOTE: Return values are the reverse of what you expect. */ 1657 return (failed); 1658 } 1659 1660 /* 1661 * SSL_set_alpn_protos sets the ALPN protocol list to the specified 1662 * protocols, which must be in wire-format (i.e. a series of non-empty, 1663 * 8-bit length-prefixed strings). Returns 0 on success. 1664 */ 1665 int 1666 SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos, 1667 unsigned int protos_len) 1668 { 1669 int failed = 1; 1670 1671 if (protos == NULL || protos_len == 0) 1672 goto err; 1673 1674 free(ssl->internal->alpn_client_proto_list); 1675 ssl->internal->alpn_client_proto_list = NULL; 1676 ssl->internal->alpn_client_proto_list_len = 0; 1677 1678 if ((ssl->internal->alpn_client_proto_list = malloc(protos_len)) 1679 == NULL) 1680 goto err; 1681 ssl->internal->alpn_client_proto_list_len = protos_len; 1682 1683 memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len); 1684 1685 failed = 0; 1686 1687 err: 1688 /* NOTE: Return values are the reverse of what you expect. */ 1689 return (failed); 1690 } 1691 1692 /* 1693 * SSL_CTX_set_alpn_select_cb sets a callback function that is called during 1694 * ClientHello processing in order to select an ALPN protocol from the 1695 * client's list of offered protocols. 1696 */ 1697 void 1698 SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx, 1699 int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen, 1700 const unsigned char *in, unsigned int inlen, void *arg), void *arg) 1701 { 1702 ctx->internal->alpn_select_cb = cb; 1703 ctx->internal->alpn_select_cb_arg = arg; 1704 } 1705 1706 /* 1707 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return 1708 * it sets data to point to len bytes of protocol name (not including the 1709 * leading length-prefix byte). If the server didn't respond with* a negotiated 1710 * protocol then len will be zero. 1711 */ 1712 void 1713 SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data, 1714 unsigned *len) 1715 { 1716 *data = NULL; 1717 *len = 0; 1718 1719 if (ssl->s3 != NULL) { 1720 *data = ssl->s3->internal->alpn_selected; 1721 *len = ssl->s3->internal->alpn_selected_len; 1722 } 1723 } 1724 1725 int 1726 SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen, 1727 const char *label, size_t llen, const unsigned char *p, size_t plen, 1728 int use_context) 1729 { 1730 return (tls1_export_keying_material(s, out, olen, 1731 label, llen, p, plen, use_context)); 1732 } 1733 1734 static unsigned long 1735 ssl_session_hash(const SSL_SESSION *a) 1736 { 1737 unsigned long l; 1738 1739 l = (unsigned long) 1740 ((unsigned int) a->session_id[0] )| 1741 ((unsigned int) a->session_id[1]<< 8L)| 1742 ((unsigned long)a->session_id[2]<<16L)| 1743 ((unsigned long)a->session_id[3]<<24L); 1744 return (l); 1745 } 1746 1747 /* 1748 * NB: If this function (or indeed the hash function which uses a sort of 1749 * coarser function than this one) is changed, ensure 1750 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being 1751 * able to construct an SSL_SESSION that will collide with any existing session 1752 * with a matching session ID. 1753 */ 1754 static int 1755 ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b) 1756 { 1757 if (a->ssl_version != b->ssl_version) 1758 return (1); 1759 if (a->session_id_length != b->session_id_length) 1760 return (1); 1761 if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0) 1762 return (1); 1763 return (0); 1764 } 1765 1766 /* 1767 * These wrapper functions should remain rather than redeclaring 1768 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each 1769 * variable. The reason is that the functions aren't static, they're exposed via 1770 * ssl.h. 1771 */ 1772 static unsigned long 1773 ssl_session_LHASH_HASH(const void *arg) 1774 { 1775 const SSL_SESSION *a = arg; 1776 1777 return ssl_session_hash(a); 1778 } 1779 1780 static int 1781 ssl_session_LHASH_COMP(const void *arg1, const void *arg2) 1782 { 1783 const SSL_SESSION *a = arg1; 1784 const SSL_SESSION *b = arg2; 1785 1786 return ssl_session_cmp(a, b); 1787 } 1788 1789 SSL_CTX * 1790 SSL_CTX_new(const SSL_METHOD *meth) 1791 { 1792 SSL_CTX *ret; 1793 1794 if (!OPENSSL_init_ssl(0, NULL)) { 1795 SSLerrorx(SSL_R_LIBRARY_BUG); 1796 return (NULL); 1797 } 1798 1799 if (meth == NULL) { 1800 SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED); 1801 return (NULL); 1802 } 1803 1804 if ((ret = calloc(1, sizeof(*ret))) == NULL) { 1805 SSLerrorx(ERR_R_MALLOC_FAILURE); 1806 return (NULL); 1807 } 1808 if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) { 1809 free(ret); 1810 SSLerrorx(ERR_R_MALLOC_FAILURE); 1811 return (NULL); 1812 } 1813 1814 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) { 1815 SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS); 1816 goto err; 1817 } 1818 1819 ret->method = meth; 1820 ret->internal->min_version = meth->internal->min_version; 1821 ret->internal->max_version = meth->internal->max_version; 1822 1823 ret->cert_store = NULL; 1824 ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER; 1825 ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT; 1826 ret->internal->session_cache_head = NULL; 1827 ret->internal->session_cache_tail = NULL; 1828 1829 /* We take the system default */ 1830 ret->session_timeout = meth->internal->get_timeout(); 1831 1832 ret->internal->new_session_cb = 0; 1833 ret->internal->remove_session_cb = 0; 1834 ret->internal->get_session_cb = 0; 1835 ret->internal->generate_session_id = 0; 1836 1837 memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats)); 1838 1839 ret->references = 1; 1840 ret->internal->quiet_shutdown = 0; 1841 1842 ret->internal->info_callback = NULL; 1843 1844 ret->internal->app_verify_callback = 0; 1845 ret->internal->app_verify_arg = NULL; 1846 1847 ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT; 1848 ret->internal->read_ahead = 0; 1849 ret->internal->msg_callback = 0; 1850 ret->internal->msg_callback_arg = NULL; 1851 ret->verify_mode = SSL_VERIFY_NONE; 1852 ret->sid_ctx_length = 0; 1853 ret->internal->default_verify_callback = NULL; 1854 if ((ret->internal->cert = ssl_cert_new()) == NULL) 1855 goto err; 1856 1857 ret->default_passwd_callback = 0; 1858 ret->default_passwd_callback_userdata = NULL; 1859 ret->internal->client_cert_cb = 0; 1860 ret->internal->app_gen_cookie_cb = 0; 1861 ret->internal->app_verify_cookie_cb = 0; 1862 1863 ret->internal->sessions = lh_SSL_SESSION_new(); 1864 if (ret->internal->sessions == NULL) 1865 goto err; 1866 ret->cert_store = X509_STORE_new(); 1867 if (ret->cert_store == NULL) 1868 goto err; 1869 1870 ssl_create_cipher_list(ret->method, &ret->cipher_list, 1871 &ret->internal->cipher_list_by_id, SSL_DEFAULT_CIPHER_LIST); 1872 if (ret->cipher_list == NULL || 1873 sk_SSL_CIPHER_num(ret->cipher_list) <= 0) { 1874 SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS); 1875 goto err2; 1876 } 1877 1878 ret->param = X509_VERIFY_PARAM_new(); 1879 if (!ret->param) 1880 goto err; 1881 1882 if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL) 1883 goto err; 1884 1885 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data); 1886 1887 ret->extra_certs = NULL; 1888 1889 ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH; 1890 1891 ret->internal->tlsext_servername_callback = 0; 1892 ret->internal->tlsext_servername_arg = NULL; 1893 1894 /* Setup RFC4507 ticket keys */ 1895 arc4random_buf(ret->internal->tlsext_tick_key_name, 16); 1896 arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16); 1897 arc4random_buf(ret->internal->tlsext_tick_aes_key, 16); 1898 1899 ret->internal->tlsext_status_cb = 0; 1900 ret->internal->tlsext_status_arg = NULL; 1901 1902 #ifndef OPENSSL_NO_ENGINE 1903 ret->internal->client_cert_engine = NULL; 1904 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO 1905 #define eng_strx(x) #x 1906 #define eng_str(x) eng_strx(x) 1907 /* Use specific client engine automatically... ignore errors */ 1908 { 1909 ENGINE *eng; 1910 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1911 if (!eng) { 1912 ERR_clear_error(); 1913 ENGINE_load_builtin_engines(); 1914 eng = ENGINE_by_id(eng_str( 1915 OPENSSL_SSL_CLIENT_ENGINE_AUTO)); 1916 } 1917 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng)) 1918 ERR_clear_error(); 1919 } 1920 #endif 1921 #endif 1922 /* 1923 * Default is to connect to non-RI servers. When RI is more widely 1924 * deployed might change this. 1925 */ 1926 ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT; 1927 1928 return (ret); 1929 err: 1930 SSLerrorx(ERR_R_MALLOC_FAILURE); 1931 err2: 1932 SSL_CTX_free(ret); 1933 return (NULL); 1934 } 1935 1936 void 1937 SSL_CTX_free(SSL_CTX *ctx) 1938 { 1939 int i; 1940 1941 if (ctx == NULL) 1942 return; 1943 1944 i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX); 1945 if (i > 0) 1946 return; 1947 1948 X509_VERIFY_PARAM_free(ctx->param); 1949 1950 /* 1951 * Free internal session cache. However: the remove_cb() may reference 1952 * the ex_data of SSL_CTX, thus the ex_data store can only be removed 1953 * after the sessions were flushed. 1954 * As the ex_data handling routines might also touch the session cache, 1955 * the most secure solution seems to be: empty (flush) the cache, then 1956 * free ex_data, then finally free the cache. 1957 * (See ticket [openssl.org #212].) 1958 */ 1959 if (ctx->internal->sessions != NULL) 1960 SSL_CTX_flush_sessions(ctx, 0); 1961 1962 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data); 1963 1964 lh_SSL_SESSION_free(ctx->internal->sessions); 1965 1966 X509_STORE_free(ctx->cert_store); 1967 sk_SSL_CIPHER_free(ctx->cipher_list); 1968 sk_SSL_CIPHER_free(ctx->internal->cipher_list_by_id); 1969 ssl_cert_free(ctx->internal->cert); 1970 sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free); 1971 sk_X509_pop_free(ctx->extra_certs, X509_free); 1972 1973 #ifndef OPENSSL_NO_SRTP 1974 if (ctx->internal->srtp_profiles) 1975 sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles); 1976 #endif 1977 1978 #ifndef OPENSSL_NO_ENGINE 1979 ENGINE_finish(ctx->internal->client_cert_engine); 1980 #endif 1981 1982 free(ctx->internal->tlsext_ecpointformatlist); 1983 free(ctx->internal->tlsext_supportedgroups); 1984 1985 free(ctx->internal->alpn_client_proto_list); 1986 1987 free(ctx->internal); 1988 free(ctx); 1989 } 1990 1991 int 1992 SSL_CTX_up_ref(SSL_CTX *ctx) 1993 { 1994 int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 1995 return ((refs > 1) ? 1 : 0); 1996 } 1997 1998 pem_password_cb * 1999 SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx) 2000 { 2001 return (ctx->default_passwd_callback); 2002 } 2003 2004 void 2005 SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb) 2006 { 2007 ctx->default_passwd_callback = cb; 2008 } 2009 2010 void * 2011 SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx) 2012 { 2013 return ctx->default_passwd_callback_userdata; 2014 } 2015 2016 void 2017 SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) 2018 { 2019 ctx->default_passwd_callback_userdata = u; 2020 } 2021 2022 void 2023 SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *, 2024 void *), void *arg) 2025 { 2026 ctx->internal->app_verify_callback = cb; 2027 ctx->internal->app_verify_arg = arg; 2028 } 2029 2030 void 2031 SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *)) 2032 { 2033 ctx->verify_mode = mode; 2034 ctx->internal->default_verify_callback = cb; 2035 } 2036 2037 void 2038 SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth) 2039 { 2040 X509_VERIFY_PARAM_set_depth(ctx->param, depth); 2041 } 2042 2043 void 2044 ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher) 2045 { 2046 int rsa_enc, rsa_sign, dh_tmp; 2047 int have_ecc_cert; 2048 unsigned long mask_k, mask_a; 2049 X509 *x = NULL; 2050 CERT_PKEY *cpk; 2051 2052 if (c == NULL) 2053 return; 2054 2055 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || 2056 c->dh_tmp_auto != 0); 2057 2058 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]); 2059 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL); 2060 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]); 2061 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL); 2062 cpk = &(c->pkeys[SSL_PKEY_ECC]); 2063 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL); 2064 2065 mask_k = 0; 2066 mask_a = 0; 2067 2068 cpk = &(c->pkeys[SSL_PKEY_GOST01]); 2069 if (cpk->x509 != NULL && cpk->privatekey !=NULL) { 2070 mask_k |= SSL_kGOST; 2071 mask_a |= SSL_aGOST01; 2072 } 2073 2074 if (rsa_enc) 2075 mask_k |= SSL_kRSA; 2076 2077 if (dh_tmp) 2078 mask_k |= SSL_kDHE; 2079 2080 if (rsa_enc || rsa_sign) 2081 mask_a |= SSL_aRSA; 2082 2083 mask_a |= SSL_aNULL; 2084 2085 /* 2086 * An ECC certificate may be usable for ECDH and/or 2087 * ECDSA cipher suites depending on the key usage extension. 2088 */ 2089 if (have_ecc_cert) { 2090 x = (c->pkeys[SSL_PKEY_ECC]).x509; 2091 2092 /* This call populates extension flags (ex_flags). */ 2093 X509_check_purpose(x, -1, 0); 2094 2095 /* Key usage, if present, must allow signing. */ 2096 if ((x->ex_flags & EXFLAG_KUSAGE) == 0 || 2097 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) 2098 mask_a |= SSL_aECDSA; 2099 } 2100 2101 mask_k |= SSL_kECDHE; 2102 2103 c->mask_k = mask_k; 2104 c->mask_a = mask_a; 2105 c->valid = 1; 2106 } 2107 2108 /* See if this handshake is using an ECC cipher suite. */ 2109 int 2110 ssl_using_ecc_cipher(SSL *s) 2111 { 2112 unsigned long alg_a, alg_k; 2113 2114 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2115 alg_k = S3I(s)->hs.new_cipher->algorithm_mkey; 2116 2117 return SSI(s)->tlsext_ecpointformatlist != NULL && 2118 SSI(s)->tlsext_ecpointformatlist_length > 0 && 2119 ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA)); 2120 } 2121 2122 int 2123 ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s) 2124 { 2125 const SSL_CIPHER *cs = S3I(s)->hs.new_cipher; 2126 unsigned long alg_a; 2127 2128 alg_a = cs->algorithm_auth; 2129 2130 if (alg_a & SSL_aECDSA) { 2131 /* This call populates extension flags (ex_flags). */ 2132 X509_check_purpose(x, -1, 0); 2133 2134 /* Key usage, if present, must allow signing. */ 2135 if ((x->ex_flags & EXFLAG_KUSAGE) && 2136 ((x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) == 0)) { 2137 SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING); 2138 return (0); 2139 } 2140 } 2141 2142 return (1); 2143 } 2144 2145 CERT_PKEY * 2146 ssl_get_server_send_pkey(const SSL *s) 2147 { 2148 unsigned long alg_a; 2149 CERT *c; 2150 int i; 2151 2152 c = s->cert; 2153 ssl_set_cert_masks(c, S3I(s)->hs.new_cipher); 2154 2155 alg_a = S3I(s)->hs.new_cipher->algorithm_auth; 2156 2157 if (alg_a & SSL_aECDSA) { 2158 i = SSL_PKEY_ECC; 2159 } else if (alg_a & SSL_aRSA) { 2160 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL) 2161 i = SSL_PKEY_RSA_SIGN; 2162 else 2163 i = SSL_PKEY_RSA_ENC; 2164 } else if (alg_a & SSL_aGOST01) { 2165 i = SSL_PKEY_GOST01; 2166 } else { /* if (alg_a & SSL_aNULL) */ 2167 SSLerror(s, ERR_R_INTERNAL_ERROR); 2168 return (NULL); 2169 } 2170 2171 return (c->pkeys + i); 2172 } 2173 2174 X509 * 2175 ssl_get_server_send_cert(const SSL *s) 2176 { 2177 CERT_PKEY *cpk; 2178 2179 cpk = ssl_get_server_send_pkey(s); 2180 if (!cpk) 2181 return (NULL); 2182 return (cpk->x509); 2183 } 2184 2185 EVP_PKEY * 2186 ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd) 2187 { 2188 unsigned long alg_a; 2189 CERT *c; 2190 int idx = -1; 2191 2192 alg_a = cipher->algorithm_auth; 2193 c = s->cert; 2194 2195 if (alg_a & SSL_aRSA) { 2196 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL) 2197 idx = SSL_PKEY_RSA_SIGN; 2198 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL) 2199 idx = SSL_PKEY_RSA_ENC; 2200 } else if ((alg_a & SSL_aECDSA) && 2201 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL)) 2202 idx = SSL_PKEY_ECC; 2203 if (idx == -1) { 2204 SSLerror(s, ERR_R_INTERNAL_ERROR); 2205 return (NULL); 2206 } 2207 if (pmd) 2208 *pmd = c->pkeys[idx].digest; 2209 return (c->pkeys[idx].privatekey); 2210 } 2211 2212 DH * 2213 ssl_get_auto_dh(SSL *s) 2214 { 2215 CERT_PKEY *cpk; 2216 int keylen; 2217 DH *dhp; 2218 2219 if (s->cert->dh_tmp_auto == 2) { 2220 keylen = 1024; 2221 } else if (S3I(s)->hs.new_cipher->algorithm_auth & SSL_aNULL) { 2222 keylen = 1024; 2223 if (S3I(s)->hs.new_cipher->strength_bits == 256) 2224 keylen = 3072; 2225 } else { 2226 if ((cpk = ssl_get_server_send_pkey(s)) == NULL) 2227 return (NULL); 2228 if (cpk->privatekey == NULL || cpk->privatekey->pkey.dh == NULL) 2229 return (NULL); 2230 keylen = EVP_PKEY_bits(cpk->privatekey); 2231 } 2232 2233 if ((dhp = DH_new()) == NULL) 2234 return (NULL); 2235 2236 dhp->g = BN_new(); 2237 if (dhp->g != NULL) 2238 BN_set_word(dhp->g, 2); 2239 2240 if (keylen >= 8192) 2241 dhp->p = get_rfc3526_prime_8192(NULL); 2242 else if (keylen >= 4096) 2243 dhp->p = get_rfc3526_prime_4096(NULL); 2244 else if (keylen >= 3072) 2245 dhp->p = get_rfc3526_prime_3072(NULL); 2246 else if (keylen >= 2048) 2247 dhp->p = get_rfc3526_prime_2048(NULL); 2248 else if (keylen >= 1536) 2249 dhp->p = get_rfc3526_prime_1536(NULL); 2250 else 2251 dhp->p = get_rfc2409_prime_1024(NULL); 2252 2253 if (dhp->p == NULL || dhp->g == NULL) { 2254 DH_free(dhp); 2255 return (NULL); 2256 } 2257 return (dhp); 2258 } 2259 2260 void 2261 ssl_update_cache(SSL *s, int mode) 2262 { 2263 int i; 2264 2265 /* 2266 * If the session_id_length is 0, we are not supposed to cache it, 2267 * and it would be rather hard to do anyway :-) 2268 */ 2269 if (s->session->session_id_length == 0) 2270 return; 2271 2272 i = s->session_ctx->internal->session_cache_mode; 2273 if ((i & mode) && (!s->internal->hit) && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) 2274 || SSL_CTX_add_session(s->session_ctx, s->session)) 2275 && (s->session_ctx->internal->new_session_cb != NULL)) { 2276 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION); 2277 if (!s->session_ctx->internal->new_session_cb(s, s->session)) 2278 SSL_SESSION_free(s->session); 2279 } 2280 2281 /* auto flush every 255 connections */ 2282 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && 2283 ((i & mode) == mode)) { 2284 if ((((mode & SSL_SESS_CACHE_CLIENT) ? 2285 s->session_ctx->internal->stats.sess_connect_good : 2286 s->session_ctx->internal->stats.sess_accept_good) & 0xff) == 0xff) { 2287 SSL_CTX_flush_sessions(s->session_ctx, time(NULL)); 2288 } 2289 } 2290 } 2291 2292 const SSL_METHOD * 2293 SSL_get_ssl_method(SSL *s) 2294 { 2295 return (s->method); 2296 } 2297 2298 int 2299 SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth) 2300 { 2301 int conn = -1; 2302 int ret = 1; 2303 2304 if (s->method != meth) { 2305 if (s->internal->handshake_func != NULL) 2306 conn = (s->internal->handshake_func == s->method->internal->ssl_connect); 2307 2308 if (s->method->internal->version == meth->internal->version) 2309 s->method = meth; 2310 else { 2311 s->method->internal->ssl_free(s); 2312 s->method = meth; 2313 ret = s->method->internal->ssl_new(s); 2314 } 2315 2316 if (conn == 1) 2317 s->internal->handshake_func = meth->internal->ssl_connect; 2318 else if (conn == 0) 2319 s->internal->handshake_func = meth->internal->ssl_accept; 2320 } 2321 return (ret); 2322 } 2323 2324 int 2325 SSL_get_error(const SSL *s, int i) 2326 { 2327 int reason; 2328 unsigned long l; 2329 BIO *bio; 2330 2331 if (i > 0) 2332 return (SSL_ERROR_NONE); 2333 2334 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake 2335 * etc, where we do encode the error */ 2336 if ((l = ERR_peek_error()) != 0) { 2337 if (ERR_GET_LIB(l) == ERR_LIB_SYS) 2338 return (SSL_ERROR_SYSCALL); 2339 else 2340 return (SSL_ERROR_SSL); 2341 } 2342 2343 if ((i < 0) && SSL_want_read(s)) { 2344 bio = SSL_get_rbio(s); 2345 if (BIO_should_read(bio)) { 2346 return (SSL_ERROR_WANT_READ); 2347 } else if (BIO_should_write(bio)) { 2348 /* 2349 * This one doesn't make too much sense... We never 2350 * try to write to the rbio, and an application 2351 * program where rbio and wbio are separate couldn't 2352 * even know what it should wait for. However if we 2353 * ever set s->internal->rwstate incorrectly (so that we have 2354 * SSL_want_read(s) instead of SSL_want_write(s)) 2355 * and rbio and wbio *are* the same, this test works 2356 * around that bug; so it might be safer to keep it. 2357 */ 2358 return (SSL_ERROR_WANT_WRITE); 2359 } else if (BIO_should_io_special(bio)) { 2360 reason = BIO_get_retry_reason(bio); 2361 if (reason == BIO_RR_CONNECT) 2362 return (SSL_ERROR_WANT_CONNECT); 2363 else if (reason == BIO_RR_ACCEPT) 2364 return (SSL_ERROR_WANT_ACCEPT); 2365 else 2366 return (SSL_ERROR_SYSCALL); /* unknown */ 2367 } 2368 } 2369 2370 if ((i < 0) && SSL_want_write(s)) { 2371 bio = SSL_get_wbio(s); 2372 if (BIO_should_write(bio)) { 2373 return (SSL_ERROR_WANT_WRITE); 2374 } else if (BIO_should_read(bio)) { 2375 /* 2376 * See above (SSL_want_read(s) with 2377 * BIO_should_write(bio)) 2378 */ 2379 return (SSL_ERROR_WANT_READ); 2380 } else if (BIO_should_io_special(bio)) { 2381 reason = BIO_get_retry_reason(bio); 2382 if (reason == BIO_RR_CONNECT) 2383 return (SSL_ERROR_WANT_CONNECT); 2384 else if (reason == BIO_RR_ACCEPT) 2385 return (SSL_ERROR_WANT_ACCEPT); 2386 else 2387 return (SSL_ERROR_SYSCALL); 2388 } 2389 } 2390 if ((i < 0) && SSL_want_x509_lookup(s)) { 2391 return (SSL_ERROR_WANT_X509_LOOKUP); 2392 } 2393 2394 if (i == 0) { 2395 if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) && 2396 (S3I(s)->warn_alert == SSL_AD_CLOSE_NOTIFY)) 2397 return (SSL_ERROR_ZERO_RETURN); 2398 } 2399 return (SSL_ERROR_SYSCALL); 2400 } 2401 2402 int 2403 SSL_do_handshake(SSL *s) 2404 { 2405 int ret = 1; 2406 2407 if (s->internal->handshake_func == NULL) { 2408 SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET); 2409 return (-1); 2410 } 2411 2412 s->method->internal->ssl_renegotiate_check(s); 2413 2414 if (SSL_in_init(s) || SSL_in_before(s)) { 2415 ret = s->internal->handshake_func(s); 2416 } 2417 return (ret); 2418 } 2419 2420 /* 2421 * For the next 2 functions, SSL_clear() sets shutdown and so 2422 * one of these calls will reset it 2423 */ 2424 void 2425 SSL_set_accept_state(SSL *s) 2426 { 2427 s->server = 1; 2428 s->internal->shutdown = 0; 2429 S3I(s)->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE; 2430 s->internal->handshake_func = s->method->internal->ssl_accept; 2431 /* clear the current cipher */ 2432 ssl_clear_cipher_ctx(s); 2433 ssl_clear_hash_ctx(&s->read_hash); 2434 ssl_clear_hash_ctx(&s->internal->write_hash); 2435 } 2436 2437 void 2438 SSL_set_connect_state(SSL *s) 2439 { 2440 s->server = 0; 2441 s->internal->shutdown = 0; 2442 S3I(s)->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE; 2443 s->internal->handshake_func = s->method->internal->ssl_connect; 2444 /* clear the current cipher */ 2445 ssl_clear_cipher_ctx(s); 2446 ssl_clear_hash_ctx(&s->read_hash); 2447 ssl_clear_hash_ctx(&s->internal->write_hash); 2448 } 2449 2450 int 2451 ssl_undefined_function(SSL *s) 2452 { 2453 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2454 return (0); 2455 } 2456 2457 int 2458 ssl_undefined_void_function(void) 2459 { 2460 SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2461 return (0); 2462 } 2463 2464 int 2465 ssl_undefined_const_function(const SSL *s) 2466 { 2467 SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); 2468 return (0); 2469 } 2470 2471 const char * 2472 ssl_version_string(int ver) 2473 { 2474 switch (ver) { 2475 case DTLS1_VERSION: 2476 return (SSL_TXT_DTLS1); 2477 case TLS1_VERSION: 2478 return (SSL_TXT_TLSV1); 2479 case TLS1_1_VERSION: 2480 return (SSL_TXT_TLSV1_1); 2481 case TLS1_2_VERSION: 2482 return (SSL_TXT_TLSV1_2); 2483 default: 2484 return ("unknown"); 2485 } 2486 } 2487 2488 const char * 2489 SSL_get_version(const SSL *s) 2490 { 2491 return ssl_version_string(s->version); 2492 } 2493 2494 SSL * 2495 SSL_dup(SSL *s) 2496 { 2497 STACK_OF(X509_NAME) *sk; 2498 X509_NAME *xn; 2499 SSL *ret; 2500 int i; 2501 2502 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL) 2503 return (NULL); 2504 2505 ret->version = s->version; 2506 ret->internal->type = s->internal->type; 2507 ret->method = s->method; 2508 2509 if (s->session != NULL) { 2510 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */ 2511 SSL_copy_session_id(ret, s); 2512 } else { 2513 /* 2514 * No session has been established yet, so we have to expect 2515 * that s->cert or ret->cert will be changed later -- 2516 * they should not both point to the same object, 2517 * and thus we can't use SSL_copy_session_id. 2518 */ 2519 2520 ret->method->internal->ssl_free(ret); 2521 ret->method = s->method; 2522 ret->method->internal->ssl_new(ret); 2523 2524 if (s->cert != NULL) { 2525 ssl_cert_free(ret->cert); 2526 ret->cert = ssl_cert_dup(s->cert); 2527 if (ret->cert == NULL) 2528 goto err; 2529 } 2530 2531 SSL_set_session_id_context(ret, 2532 s->sid_ctx, s->sid_ctx_length); 2533 } 2534 2535 ret->internal->options = s->internal->options; 2536 ret->internal->mode = s->internal->mode; 2537 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s)); 2538 SSL_set_read_ahead(ret, SSL_get_read_ahead(s)); 2539 ret->internal->msg_callback = s->internal->msg_callback; 2540 ret->internal->msg_callback_arg = s->internal->msg_callback_arg; 2541 SSL_set_verify(ret, SSL_get_verify_mode(s), 2542 SSL_get_verify_callback(s)); 2543 SSL_set_verify_depth(ret, SSL_get_verify_depth(s)); 2544 ret->internal->generate_session_id = s->internal->generate_session_id; 2545 2546 SSL_set_info_callback(ret, SSL_get_info_callback(s)); 2547 2548 ret->internal->debug = s->internal->debug; 2549 2550 /* copy app data, a little dangerous perhaps */ 2551 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, 2552 &ret->internal->ex_data, &s->internal->ex_data)) 2553 goto err; 2554 2555 /* setup rbio, and wbio */ 2556 if (s->rbio != NULL) { 2557 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio)) 2558 goto err; 2559 } 2560 if (s->wbio != NULL) { 2561 if (s->wbio != s->rbio) { 2562 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio)) 2563 goto err; 2564 } else 2565 ret->wbio = ret->rbio; 2566 } 2567 ret->internal->rwstate = s->internal->rwstate; 2568 ret->internal->in_handshake = s->internal->in_handshake; 2569 ret->internal->handshake_func = s->internal->handshake_func; 2570 ret->server = s->server; 2571 ret->internal->renegotiate = s->internal->renegotiate; 2572 ret->internal->new_session = s->internal->new_session; 2573 ret->internal->quiet_shutdown = s->internal->quiet_shutdown; 2574 ret->internal->shutdown = s->internal->shutdown; 2575 /* SSL_dup does not really work at any state, though */ 2576 S3I(ret)->hs.state = S3I(s)->hs.state; 2577 ret->internal->rstate = s->internal->rstate; 2578 2579 /* 2580 * Would have to copy ret->init_buf, ret->init_msg, ret->init_num, 2581 * ret->init_off 2582 */ 2583 ret->internal->init_num = 0; 2584 2585 ret->internal->hit = s->internal->hit; 2586 2587 X509_VERIFY_PARAM_inherit(ret->param, s->param); 2588 2589 /* dup the cipher_list and cipher_list_by_id stacks */ 2590 if (s->cipher_list != NULL) { 2591 if ((ret->cipher_list = 2592 sk_SSL_CIPHER_dup(s->cipher_list)) == NULL) 2593 goto err; 2594 } 2595 if (s->internal->cipher_list_by_id != NULL) { 2596 if ((ret->internal->cipher_list_by_id = 2597 sk_SSL_CIPHER_dup(s->internal->cipher_list_by_id)) == NULL) 2598 goto err; 2599 } 2600 2601 /* Dup the client_CA list */ 2602 if (s->internal->client_CA != NULL) { 2603 if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err; 2604 ret->internal->client_CA = sk; 2605 for (i = 0; i < sk_X509_NAME_num(sk); i++) { 2606 xn = sk_X509_NAME_value(sk, i); 2607 if (sk_X509_NAME_set(sk, i, 2608 X509_NAME_dup(xn)) == NULL) { 2609 X509_NAME_free(xn); 2610 goto err; 2611 } 2612 } 2613 } 2614 2615 if (0) { 2616 err: 2617 if (ret != NULL) 2618 SSL_free(ret); 2619 ret = NULL; 2620 } 2621 return (ret); 2622 } 2623 2624 void 2625 ssl_clear_cipher_ctx(SSL *s) 2626 { 2627 EVP_CIPHER_CTX_free(s->enc_read_ctx); 2628 s->enc_read_ctx = NULL; 2629 EVP_CIPHER_CTX_free(s->internal->enc_write_ctx); 2630 s->internal->enc_write_ctx = NULL; 2631 2632 if (s->internal->aead_read_ctx != NULL) { 2633 EVP_AEAD_CTX_cleanup(&s->internal->aead_read_ctx->ctx); 2634 free(s->internal->aead_read_ctx); 2635 s->internal->aead_read_ctx = NULL; 2636 } 2637 if (s->internal->aead_write_ctx != NULL) { 2638 EVP_AEAD_CTX_cleanup(&s->internal->aead_write_ctx->ctx); 2639 free(s->internal->aead_write_ctx); 2640 s->internal->aead_write_ctx = NULL; 2641 } 2642 2643 } 2644 2645 /* Fix this function so that it takes an optional type parameter */ 2646 X509 * 2647 SSL_get_certificate(const SSL *s) 2648 { 2649 if (s->cert != NULL) 2650 return (s->cert->key->x509); 2651 else 2652 return (NULL); 2653 } 2654 2655 /* Fix this function so that it takes an optional type parameter */ 2656 EVP_PKEY * 2657 SSL_get_privatekey(const SSL *s) 2658 { 2659 if (s->cert != NULL) 2660 return (s->cert->key->privatekey); 2661 else 2662 return (NULL); 2663 } 2664 2665 const SSL_CIPHER * 2666 SSL_get_current_cipher(const SSL *s) 2667 { 2668 if ((s->session != NULL) && (s->session->cipher != NULL)) 2669 return (s->session->cipher); 2670 return (NULL); 2671 } 2672 const void * 2673 SSL_get_current_compression(SSL *s) 2674 { 2675 return (NULL); 2676 } 2677 2678 const void * 2679 SSL_get_current_expansion(SSL *s) 2680 { 2681 return (NULL); 2682 } 2683 2684 size_t 2685 SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out) 2686 { 2687 size_t len = sizeof(s->s3->client_random); 2688 2689 if (out == NULL) 2690 return len; 2691 2692 if (len > max_out) 2693 len = max_out; 2694 2695 memcpy(out, s->s3->client_random, len); 2696 2697 return len; 2698 } 2699 2700 size_t 2701 SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out) 2702 { 2703 size_t len = sizeof(s->s3->server_random); 2704 2705 if (out == NULL) 2706 return len; 2707 2708 if (len > max_out) 2709 len = max_out; 2710 2711 memcpy(out, s->s3->server_random, len); 2712 2713 return len; 2714 } 2715 2716 int 2717 ssl_init_wbio_buffer(SSL *s, int push) 2718 { 2719 BIO *bbio; 2720 2721 if (s->bbio == NULL) { 2722 bbio = BIO_new(BIO_f_buffer()); 2723 if (bbio == NULL) 2724 return (0); 2725 s->bbio = bbio; 2726 } else { 2727 bbio = s->bbio; 2728 if (s->bbio == s->wbio) 2729 s->wbio = BIO_pop(s->wbio); 2730 } 2731 (void)BIO_reset(bbio); 2732 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */ 2733 if (!BIO_set_read_buffer_size(bbio, 1)) { 2734 SSLerror(s, ERR_R_BUF_LIB); 2735 return (0); 2736 } 2737 if (push) { 2738 if (s->wbio != bbio) 2739 s->wbio = BIO_push(bbio, s->wbio); 2740 } else { 2741 if (s->wbio == bbio) 2742 s->wbio = BIO_pop(bbio); 2743 } 2744 return (1); 2745 } 2746 2747 void 2748 ssl_free_wbio_buffer(SSL *s) 2749 { 2750 if (s == NULL) 2751 return; 2752 2753 if (s->bbio == NULL) 2754 return; 2755 2756 if (s->bbio == s->wbio) { 2757 /* remove buffering */ 2758 s->wbio = BIO_pop(s->wbio); 2759 } 2760 BIO_free(s->bbio); 2761 s->bbio = NULL; 2762 } 2763 2764 void 2765 SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode) 2766 { 2767 ctx->internal->quiet_shutdown = mode; 2768 } 2769 2770 int 2771 SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx) 2772 { 2773 return (ctx->internal->quiet_shutdown); 2774 } 2775 2776 void 2777 SSL_set_quiet_shutdown(SSL *s, int mode) 2778 { 2779 s->internal->quiet_shutdown = mode; 2780 } 2781 2782 int 2783 SSL_get_quiet_shutdown(const SSL *s) 2784 { 2785 return (s->internal->quiet_shutdown); 2786 } 2787 2788 void 2789 SSL_set_shutdown(SSL *s, int mode) 2790 { 2791 s->internal->shutdown = mode; 2792 } 2793 2794 int 2795 SSL_get_shutdown(const SSL *s) 2796 { 2797 return (s->internal->shutdown); 2798 } 2799 2800 int 2801 SSL_version(const SSL *s) 2802 { 2803 return (s->version); 2804 } 2805 2806 SSL_CTX * 2807 SSL_get_SSL_CTX(const SSL *ssl) 2808 { 2809 return (ssl->ctx); 2810 } 2811 2812 SSL_CTX * 2813 SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx) 2814 { 2815 CERT *ocert = ssl->cert; 2816 2817 if (ssl->ctx == ctx) 2818 return (ssl->ctx); 2819 if (ctx == NULL) 2820 ctx = ssl->initial_ctx; 2821 ssl->cert = ssl_cert_dup(ctx->internal->cert); 2822 if (ocert != NULL) { 2823 int i; 2824 /* Copy negotiated digests from original certificate. */ 2825 for (i = 0; i < SSL_PKEY_NUM; i++) 2826 ssl->cert->pkeys[i].digest = ocert->pkeys[i].digest; 2827 ssl_cert_free(ocert); 2828 } 2829 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX); 2830 SSL_CTX_free(ssl->ctx); /* decrement reference count */ 2831 ssl->ctx = ctx; 2832 return (ssl->ctx); 2833 } 2834 2835 int 2836 SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) 2837 { 2838 return (X509_STORE_set_default_paths(ctx->cert_store)); 2839 } 2840 2841 int 2842 SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, 2843 const char *CApath) 2844 { 2845 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath)); 2846 } 2847 2848 int 2849 SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len) 2850 { 2851 return (X509_STORE_load_mem(ctx->cert_store, buf, len)); 2852 } 2853 2854 void 2855 SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val)) 2856 { 2857 ssl->internal->info_callback = cb; 2858 } 2859 2860 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val) 2861 { 2862 return (ssl->internal->info_callback); 2863 } 2864 2865 int 2866 SSL_state(const SSL *ssl) 2867 { 2868 return (S3I(ssl)->hs.state); 2869 } 2870 2871 void 2872 SSL_set_state(SSL *ssl, int state) 2873 { 2874 S3I(ssl)->hs.state = state; 2875 } 2876 2877 void 2878 SSL_set_verify_result(SSL *ssl, long arg) 2879 { 2880 ssl->verify_result = arg; 2881 } 2882 2883 long 2884 SSL_get_verify_result(const SSL *ssl) 2885 { 2886 return (ssl->verify_result); 2887 } 2888 2889 int 2890 SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2891 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2892 { 2893 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp, 2894 new_func, dup_func, free_func)); 2895 } 2896 2897 int 2898 SSL_set_ex_data(SSL *s, int idx, void *arg) 2899 { 2900 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2901 } 2902 2903 void * 2904 SSL_get_ex_data(const SSL *s, int idx) 2905 { 2906 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2907 } 2908 2909 int 2910 SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 2911 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 2912 { 2913 return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp, 2914 new_func, dup_func, free_func)); 2915 } 2916 2917 int 2918 SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg) 2919 { 2920 return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg)); 2921 } 2922 2923 void * 2924 SSL_CTX_get_ex_data(const SSL_CTX *s, int idx) 2925 { 2926 return (CRYPTO_get_ex_data(&s->internal->ex_data, idx)); 2927 } 2928 2929 int 2930 ssl_ok(SSL *s) 2931 { 2932 return (1); 2933 } 2934 2935 X509_STORE * 2936 SSL_CTX_get_cert_store(const SSL_CTX *ctx) 2937 { 2938 return (ctx->cert_store); 2939 } 2940 2941 void 2942 SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store) 2943 { 2944 X509_STORE_free(ctx->cert_store); 2945 ctx->cert_store = store; 2946 } 2947 2948 X509 * 2949 SSL_CTX_get0_certificate(const SSL_CTX *ctx) 2950 { 2951 if (ctx->internal->cert == NULL) 2952 return NULL; 2953 2954 return ctx->internal->cert->key->x509; 2955 } 2956 2957 int 2958 SSL_want(const SSL *s) 2959 { 2960 return (s->internal->rwstate); 2961 } 2962 2963 void 2964 SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export, 2965 int keylength)) 2966 { 2967 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2968 } 2969 2970 void 2971 SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export, 2972 int keylength)) 2973 { 2974 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb); 2975 } 2976 2977 void 2978 SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export, 2979 int keylength)) 2980 { 2981 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2982 } 2983 2984 void 2985 SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export, 2986 int keylength)) 2987 { 2988 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh); 2989 } 2990 2991 void 2992 SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl, 2993 int is_export, int keylength)) 2994 { 2995 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB, 2996 (void (*)(void))ecdh); 2997 } 2998 2999 void 3000 SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export, 3001 int keylength)) 3002 { 3003 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh); 3004 } 3005 3006 3007 void 3008 SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, 3009 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3010 { 3011 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, 3012 (void (*)(void))cb); 3013 } 3014 3015 void 3016 SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, 3017 int content_type, const void *buf, size_t len, SSL *ssl, void *arg)) 3018 { 3019 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb); 3020 } 3021 3022 void 3023 ssl_clear_hash_ctx(EVP_MD_CTX **hash) 3024 { 3025 if (*hash) 3026 EVP_MD_CTX_destroy(*hash); 3027 *hash = NULL; 3028 } 3029 3030 void 3031 SSL_set_debug(SSL *s, int debug) 3032 { 3033 s->internal->debug = debug; 3034 } 3035 3036 int 3037 SSL_cache_hit(SSL *s) 3038 { 3039 return (s->internal->hit); 3040 } 3041 3042 int 3043 SSL_CTX_get_min_proto_version(SSL_CTX *ctx) 3044 { 3045 return ctx->internal->min_version; 3046 } 3047 3048 int 3049 SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version) 3050 { 3051 return ssl_version_set_min(ctx->method, version, 3052 ctx->internal->max_version, &ctx->internal->min_version); 3053 } 3054 3055 int 3056 SSL_CTX_get_max_proto_version(SSL_CTX *ctx) 3057 { 3058 return ctx->internal->max_version; 3059 } 3060 3061 int 3062 SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version) 3063 { 3064 return ssl_version_set_max(ctx->method, version, 3065 ctx->internal->min_version, &ctx->internal->max_version); 3066 } 3067 3068 int 3069 SSL_get_min_proto_version(SSL *ssl) 3070 { 3071 return ssl->internal->min_version; 3072 } 3073 3074 int 3075 SSL_set_min_proto_version(SSL *ssl, uint16_t version) 3076 { 3077 return ssl_version_set_min(ssl->method, version, 3078 ssl->internal->max_version, &ssl->internal->min_version); 3079 } 3080 int 3081 SSL_get_max_proto_version(SSL *ssl) 3082 { 3083 return ssl->internal->max_version; 3084 } 3085 3086 int 3087 SSL_set_max_proto_version(SSL *ssl, uint16_t version) 3088 { 3089 return ssl_version_set_max(ssl->method, version, 3090 ssl->internal->min_version, &ssl->internal->max_version); 3091 } 3092 3093 static int 3094 ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_) 3095 { 3096 SSL_CIPHER const *a = a_; 3097 SSL_CIPHER const *b = b_; 3098 return ssl_cipher_id_cmp(a, b); 3099 } 3100 3101 SSL_CIPHER * 3102 OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num) 3103 { 3104 return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER), 3105 ssl_cipher_id_cmp_BSEARCH_CMP_FN); 3106 } 3107